Cylinder Head - Mexico National Nascar Spec Head - 190 cc Intake - 7/16 in Rocker Arm Studs - Straight Plug - Vortec - Aluminum - Small Block Chevy - Pair
Cylinder Head - Assembled - 1.940 / 1.500 in Valves - 170 cc Intake - 64 cc Chamber - 1.280 in Springs - Straight Plug - Iron - Small Block Chevy - Each
Cylinder Head - Vortec - Assembled - 2.000/1.550 in Valves - 185 cc Intake - 66 cc Chamber - 1.320 in Springs - Straight Plug - Cast Iron - Small Block Chevy - Each
Cylinder Head - Super 23 - Assembled - 1.940 / 1.500 in Valves - 175 cc Intake - 56 cc Chamber - 1.460 in Springs - Aluminum - Small Block Chevy - Each